8990121013 has 16 divisors (see below), whose sum is σ = 9261907200. Its totient is φ = 8722687680.

The previous prime is 8990120981. The next prime is 8990121121. The reversal of 8990121013 is 3101210998.

It is not a de Polignac number, because 8990121013 - 2⁵ = 8990120981 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8990121013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8990161013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5259603 + ... + 5261311.

It is an arithmetic number, because the mean of its divisors is an integer number (578869200).

Almost surely, 2^8990121013 is an apocalyptic number.

8990121013 is a gapful number since it is divisible by the number (83) formed by its first and last digit.

It is an amenable number.

8990121013 is a deficient number, since it is larger than the sum of its proper divisors (271786187).

8990121013 is a wasteful number, since it uses less digits than its factorization.

8990121013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2892.

The product of its (nonzero) digits is 3888, while the sum is 34.

The square root of 8990121013 is about 94816.2486760576. The cubic root of 8990121013 is about 2079.3224658549.

The spelling of 8990121013 in words is "eight billion, nine hundred ninety million, one hundred twenty-one thousand, thirteen".